Chapter 2.7, Problem 2.26P

Interpretation Introduction

(a)

Interpretation:

The total number of electrons, valence electrons and the name of the element are to be identified in the electronic configuration, $1s^{2}2s^{2}2p^{6}3s^2$.

Concept Introduction:

The electrons in the atoms revolve around the nucleus in different orbits. The main orbits are also known as shell which have different energy levels as sub shell and orbital. These all havefixed energy. The distribution of electrons in these energy levels is its electronic configuration.

Interpretation Introduction

(b)

Interpretation:

The total number of electrons, valence electrons and the name of the element areto be identified in the electronic configuration, $1s^{2}2s^{2}2p^{6}3s^{2}3p^3$.

Concept Introduction:

The electrons in the atoms revolve around thenucleus in different orbits. The main orbits are also known as shell which have different energy levels as sub shell and orbital. These all havefixed energy. The distribution of electrons in these energy levels is its electronic configuration.

Interpretation Introduction

(c)

Interpretation:

The total number of electrons, valence electrons and the name of the element areto be identified in the electronic configuration, $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^2$.

Concept Introduction:

The electrons in the atoms revolve around the nucleus in different orbits. The main orbits are also known as shell which have different energy levels as sub shell and orbital. These all havefixed energy. The distribution of electrons in these energy levels is its electronic configuration.

Interpretation Introduction

(d)

Interpretation:

The total number of electrons, valence electrons and the name of the element areto be identified in the electronic configuration, $\left[\text{Ar}\right]4s^{2}3d^6$.

Concept Introduction:

The electrons in the atoms revolve around the nucleus in different orbits. The main orbits are also known as shell which have different energy levels as sub shell and orbital. These all have fixed energy. The distribution of electrons in these energy levels is its electronic configuration.